GB321586A - Improvements in method of and apparatus for forming artificial dentures - Google Patents
Improvements in method of and apparatus for forming artificial denturesInfo
- Publication number
- GB321586A GB321586A GB3728528A GB3728528A GB321586A GB 321586 A GB321586 A GB 321586A GB 3728528 A GB3728528 A GB 3728528A GB 3728528 A GB3728528 A GB 3728528A GB 321586 A GB321586 A GB 321586A
- Authority
- GB
- United Kingdom
- Prior art keywords
- denture
- flexible
- groove
- model
- flask
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C13/00—Dental prostheses; Making same
- A61C13/01—Palates or other bases or supports for the artificial teeth; Making same
- A61C13/04—Palates or other bases or supports for the artificial teeth; Making same made by casting
Landscapes
- Health & Medical Sciences (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Dental Prosthetics (AREA)
Abstract
321,586. Barbour, F. W. Dec. 17, 1928. Teeth, artificial.-In a method of fitting a denture having a close-fitting flexible margin secured thereto, the flexible margin 10 is first built out by means of impression material 11 so as to fit the patient's mouth, then a mould is obtained of the built up margin, the impression material removed and the flexible margin displaced so that it. fits the mould, the denture being finally treated in the mould so as to set the flexible margin to the moulded shape. Impression material 1 carried on a tray 22 is used to form a model 2 of the mouth, preferably in plaster of paris. A dark band having an outer edge 3<a> may be scratched in the plaster to define the area of the proposed denture. If the teeth are to be fitted before completing the denture, they are first mounted as usual on wax 4 and, after fitting, are placed on the model and the wax trimmed back to about “ in. from the edge 3<a>. A strip of flexible pattern material 5, having rounded ends 5a, is next screwed to the model with one edge closely following the line 3<a> and wax 6 is employed to fill the space between the pattern and the wax 4, Fig. 5. If it is not desired to fit the teeth before completing the denture, the pattern may be applied directly to the model before the teeth and wa.x carrier are applied thereto. The model is then placed in the lower part of the flask and the teeth in the upper half and, after separation of the flask, the pattern 5 is removed from the groove 9, Fig. 7. The wax 4 and 6 around the teeth is then removed from the upper half. A flexible margin 10 made of soft rubber with a concaved surface and rounded lower edge 10<b> is now inserted in the groove 9 with the concaved side fitting against the model. The remainder of the groove 9 is filled with vulcanite rubber and the upper side of the flask is filled with vulcanite rubber as usual. The flask is then assembled and by pressure the flexible margin is forced against the model. The flask is heated and more pressure applied, a temperature of 300‹ being preferably maintained for about 2¢ hours. Having thus formed the denture with a flexible edge, some soft wax 11 is fitted to the inner side of the edge 10<b>, and the denture placed in the mouth and even pressure is exerted, this process being repeated if necessary until the desired fit is obtained. The denture is then embedded in the lower flask section 7<b>, Fig. 11. A channel 12 is then cut round the outer edge of the denture and the wax 11 is washed out to leave a groove 13. Soft tape 14 is then packed in the groove 12 so as to force the flexible margin into the groove 13. The flask sections are closed and the flask heated to 300‹ for about 15 minutes. The flexible strip, which is plastic at high temperatures, thus assumes the desired shape and it regains its resilience after cooling. In a modification, Fig. 15, the impression material 1<a> may be trimmed down to the shape of the desired denture and the soft wax 11<a> moulded to give the correct fit before making the model 2a which is now formed with a groove 15. The pattern material 5 is then placed with one rounded edge lying in the groove and the model is flasked to form a groove 9<a> into which the flexible material 10 is inserted, the packing and vulcanizing steps being then carried out as before. Existing dentures may be fitted with the flexible margin which may also be used on partial dentures. The invention may also be applied to upper dentures, in which case the flexible margin may be extended across the back of the denture to engage the roof of the mouth. If desired a vulcanite base fitted with the flexible margin may be made first, the teeth being subsequently fitted to this base and a second vulcaniza. tion being made.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3728528A GB321586A (en) | 1928-12-17 | 1928-12-17 | Improvements in method of and apparatus for forming artificial dentures |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB3728528A GB321586A (en) | 1928-12-17 | 1928-12-17 | Improvements in method of and apparatus for forming artificial dentures |
Publications (1)
Publication Number | Publication Date |
---|---|
GB321586A true GB321586A (en) | 1929-11-14 |
Family
ID=10395229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB3728528A Expired GB321586A (en) | 1928-12-17 | 1928-12-17 | Improvements in method of and apparatus for forming artificial dentures |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB321586A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4548582A (en) * | 1984-05-15 | 1985-10-22 | Doerpinghaus Herbert | Method of making dental prostheses |
-
1928
- 1928-12-17 GB GB3728528A patent/GB321586A/en not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4548582A (en) * | 1984-05-15 | 1985-10-22 | Doerpinghaus Herbert | Method of making dental prostheses |
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